Highest calorie nutritionally dense foods for new mom

I'm looking for ways to up my calories without sacrificing nutrition. I'm a new mom, and my boyfriend has gone back to work and I'm finding it difficult to eat enough while trying to take care of a 6 week old baby. I mostly end up buying lots of cold cut meat and deli cheese because I can eat it with 1 hand and doesn't require cooking.
Obviously that's not ideal and I'm missing out on nutrition.

I need some foods that are super nutritionally dense and also quite calorie heavy as I don't have time to eat!

Would it be worth it to invest in a high quality protein powder for smoothies? I know it's not exactly in line with paleo principles, but it's still healthier than getting take-out when I'm pressed for time.

5
Answers

avocados, eggs, and grass-fed meat (especially liver) are a few that come to mind.
Also, sweet potatoes and yogurt (if you tolerate dairy).
Try making a smoothie with vitamin-rich plants like kale or berries, and add coconut milk, and egg yolks or some avocado. Frozen fruits and veggies work well for this and are convenient as well.

dark leafy greens (precut some spinach or romaine and other greens, rinse, dry, put in a container for future meals. I make a homade dressing by 2cups, pre-slice tomatoes, precook bacon, and preboil eggs. keep it all inn the refrigerator and make a quick bite whenever you are hungry)

pork/bacon - great nutrition, enough fat, precook it all and heat or eat cold

Potatoe fries. There are purple potatoes... regular yams. These two are my favorite but there are also regular sweet potatoes, regular potatoes, Purple yams... small red ones... stik with the first two though because those, I think, have more nutritional value.

My strategy is to take the standard suspects of vegetables and sautee them in a hefty amount of whatever fat/oil you prefer. In my case it is a LOT of onion, kale, spinach, brussel sprouts, carrots and green chile cooked in several tbsp of coconut oil in a huge wok. Add in bell peppers, mushrooms or whatever else I happen to have on hand. Top off with several globs of sour cream (I do dairy, but guacamole would probably be a fantastic substitute). Salt and pepper to taste.

Occasionally, if I have the time, I'll do this with bacon instead of coconut oil. Cook the bacon in the wok and set it to the side, leave the fat behind to cook in. At the end chop up the bacon and sprinkle on top.